Pym definitely has the better tech feats, just because that isn't generally what Palmer is about, but Palmer has the best 'figure out how to beat whatever we're up against' feats in comics. The dude figured out how to counteract a universe destroy phenomena that didn't even EXIST according to any of the rules of normal science. Stuff like that over and over (figuring out how to defeat the uber Amazo). And yeah, he's built a time machine, which even Pym hasn't done. And he cracked the Hourman virus, which was something that Superman 1 Million said could only POSSIBLY be done by a Solaris class Stellar computer. He's built devices to cross into other dimensions, he's discovered how to travel through the multiverse.
Plus his shrinking tech is better, and he's applied that tech in ways similar to Pym (a utility belt that has everything one can imagine, basically).
Originally posted by Warlord
what's palmer's greatest prep feat?
Tech building feat you mean? Or greatest accomplishment given time?
His greatest accomplishment is undoubtedly beating the Hourman Virus, tech from the 853rd Century that Superman 1 Million said could only be 'beaten' by something with the computing power of a Stellar Computer like Solaris.